Written statement by wife

Hi all.. Because i filed divorce wife came back after 2 .5 years and all elderly ppl saying to give another chance and take her back because she is accepting all her mistakes and she is ready to live eith me, dont know real intentions , last 2 years she was away and she was threatening abt false cases against me but never filed one, so now if i want to give her a chance, by taking wtitten statements either from her throgh court or police station which is best? And if she fails again problems between us continued after 3 months also then next if i file divorce will this agreement help me for that? Pls help me in this i am very much confused, i am more happy, if she say she dont agree for my conditions pls suggest